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-rw-r--r--arch/s390/kernel/uprobes.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/s390/kernel/uprobes.c b/arch/s390/kernel/uprobes.c
index d9d1f512f019..5007fac01bb5 100644
--- a/arch/s390/kernel/uprobes.c
+++ b/arch/s390/kernel/uprobes.c
@@ -150,6 +150,15 @@ unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
return orig;
}
+bool arch_uretprobe_is_alive(struct return_instance *ret, enum rp_check ctx,
+ struct pt_regs *regs)
+{
+ if (ctx == RP_CHECK_CHAIN_CALL)
+ return user_stack_pointer(regs) <= ret->stack;
+ else
+ return user_stack_pointer(regs) < ret->stack;
+}
+
/* Instruction Emulation */
static void adjust_psw_addr(psw_t *psw, unsigned long len)